EDAM Entertainment’s September 4 teaser announced a new IU digital single for September 10 at 6 p.m. KST. Retro computer visuals and moon-and-orbit imagery accompanied the date; the song title has not yet been revealed. The teaser uses music briefly heard in an official YouTube video posted in late August. The release comes exactly one year after Bye, Summer, which arrived on the same date last year.